Ok. Looking really forward to see you, would you like to have a cup of coffee 
or do you prefer Darjeeling 'First Flush' ?


:-)



I'll provide everything necessary and contact you if i'm ready...would you 
prefer an email via the list or directly to you?

Anyway.....thanks for your very kind and prompt support! I can imagine that 
time has become a value to you.....


Best ragards,
  Thorsten




---------
Dipl.-Ing.
Thorsten Volkmer-Wolf
IT-Support & Services

AEROTEC Engineering GmbH
Hein-Saß-Weg 38
21129 Hamburg / Germany

fon +49 (0)40/742 198-241
fax +49 (0)40/742 198-111
http://www.aerotec.de

Geschäftsführer: Jürgen Hoffmann, Rainer Feddersen, Amtsgericht Itzehoe HRB 
1512 


-----Ursprüngliche Nachricht-----
Von: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Im Auftrag von Luca Deri
Gesendet: Donnerstag, 11. Oktober 2007 12:00
An: [email protected]
Betreff: Re: AW: [Ntop] ntop records "null"......

Thorsten
I should better fly to Hamburg with Ryanair rather than explain this via email 
:-)

The steps are more or less these:
- download and build ntop from svn http://www.ntop.org/download.html
- start the ntop you have compiled with the options you currently use
- wait until ntop presents the problem
- do "ps auxw|grep ntop" and get the lt-ntop PID
- cd <dir where the ntop you compiled is>/.libs
- gdb lt-ntop
- inside gdb do "attach <ntop PID above>"
-type a few commands like "bt", "show threads" etc.

Better if at this time I can connect to you PC so see what's happening.

Cheers, Luca

Thorsten Volkmer-Wolf wrote:
> Luca,
>
> ....eeeeer.....yes. I'm unexperienced using a debugger on linux.....but i'm 
> not totally dumb, so if you could lend me a hand and tell me how to start. 
> Ntop is installed as a package, i have not compiled it. So the first step 
> sould be to download the source and compile it?
>
> Thanks for your quick reply,
>   Thorsten
>
>
> ---------
> Dipl.-Ing.
> Thorsten Volkmer-Wolf
> IT-Support & Services
>
> AEROTEC Engineering GmbH
> Hein-Saß-Weg 38
> 21129 Hamburg / Germany
>
> fon +49 (0)40/742 198-241
> fax +49 (0)40/742 198-111
> http://www.aerotec.de
>
> Geschäftsführer: Jürgen Hoffmann, Rainer Feddersen, Amtsgericht 
> Itzehoe HRB 1512
>
>
> -----Ursprüngliche Nachricht-----
> Von: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Im Auftrag 
> von Luca Deri
> Gesendet: Donnerstag, 11. Oktober 2007 09:35
> An: [email protected]
> Betreff: Re: [Ntop] ntop records "null"......
>
> Thorsten
> I bet it's a packet that causes a loop while decoding it. A DNS/DHCP packet 
> is a good candidate. Can you please investigate with a debugger and report to 
> me?
>
> Thanks, Luca
>
> Thorsten Volkmer-Wolf wrote:
>   
>> Hello community,
>>  
>> It's been a while since i've been here.....so: 'hello again'. And, as it 
>> nearly allways happens, i'm back 'cause i've got a problem.
>>  
>> My installation of ntop runs fine for a couple of hours or even a day, all 
>> over a sudden it keeps recording null values into it's rrd databases. I've 
>> read that it might be a daemon in the background resetting the interface, 
>> investigation in this direction lead to nothing. There are even no 
>> broadcasts beeing counted. In the messages log there's no entry showing the 
>> change of promiscuous mode.
>>  
>> A tcpdump shows that there's still loads of traffic on the interface, but 
>> ntop doesn't recognize it. The plugin "host last seen' also shows no 
>> updates, it seems like the interface has been taken from 'wire' completely, 
>> allthough traffic is still going through it as allready mentioned.
>>  
>> Are there any ideas in which direction to search for the fault? 
>> Thanks for any hints in advance,
>>  
>>     Thorsten
>>  
>> ---------
>> Dipl.-Ing.
>> Thorsten Volkmer-Wolf
>> IT-Support & Services
>>
>> AEROTEC Engineering GmbH
>> Hein-Saß-Weg 38
>> 21129 Hamburg / Germany
>>
>> fon +49 (0)40/742 198-241
>> fax +49 (0)40/742 198-111
>> http://www.aerotec.de <http://www.aerotec.de/>
>>
>> Geschäftsführer: Jürgen Hoffmann, Rainer Feddersen, Amtsgericht 
>> Itzehoe HRB 1512
>>
>>  
>>
>>   
>> ---------------------------------------------------------------------
>> -
>> --
>>
>> _______________________________________________
>> Ntop mailing list
>> [email protected]
>> http://listgateway.unipi.it/mailman/listinfo/ntop
>>   
>>     
>
>
>   


-- 

Luca Deri <[EMAIL PROTECTED]>   http://luca.ntop.org/
                                skype://lucaderi/ Don't be encumbered by past 
history. Go off and do something wonderful - Robert Noyce

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